## Deriving the quadratic formula

### November 1, 2014

[latex size=4]x = \frac{-b \pm \sqrt{b^2 – 4ac}}{2a}[/latex]Everyone can reel it off, it was banged into us at school. Where does the quadratic formula come from, and how can you get at it?

Developer, learner of things, functional programming enthusiast, hacker, and all round inquisitor.

Everyone can reel it off, it was banged into us at school. Where does the quadratic formula come from, and how can you get at it?

I’ve played with visualising the forces between particles that repel each other before, but I thought I’d have a little play around with how I could use that to create something that actually looked good (to me at least!) I put it together on codepen (which is my new favourite tool, by the way) so […]

I wondered the other day – where is the most awesome place on earth RIGHT NOW? That made me think two things: we overuse the word awesome it would be cool to use this as an excuse to use the Twitter streaming API So I fired up npm, installed ntwitterÂ and within minutes had simple program […]

It’s been a while since I’ve posted about anything interesting that I’ve made in Processing. Time to put an end to that! Allow me to present “colourful roots”. It started off as a simple particle system with the usual fade effect, but when I let the particle shrink and stay fully opaque, I was delighted […]

I’ve recently become obsessed with the night sky. I think that it was Jupiter turning up in October last year which did it. Since then I’ve looked up for Jupiter on a nightly basis, and have become interested in what else is up there too. While I don’t know what most of the constellations are, […]

Not exceptionally exciting or groundbreaking, but it was my first real experiment with processing. I got it to save out a png capture of each frame, then turned them into a video. I present to you Rainbow with a headache.

Some of you may know that I was working on a side project over Christas with @onishiweb and @mrqwest called The 12 Devs of Xmas. It’s kind of like a reverse 24ways where we post a new article on each of the 12 days of Christmas (well, actually the 12 days starting from Boxing day). […]